<!--* 下拉树形选择 组件-->
<template>
  <el-select
    ref="select"
    v-model="valueName"
    style="min-width: 3.8rem"
    :value="value"
    :multiple="multiple"
    :clearable="clearable"
    @change="changeValue"
    @clear="clearHandle"
  >
    <el-option :value="valueName" class="options">
      <el-tree
        id="tree-option"
        ref="selectTree"
        show-checkbox
        :default-expanded-keys="openTree"
        :default-checked-keys="defaultValue"
        :render-after-expand="false"
        :accordion="accordion"
        :data="options"
        :props="{
          children: 'children',
          label: 'name'
        }"
        node-key="id"
        @check-change="handleCheckChange"
      >
        <!-- <span slot-scope="{ data }">
          <i
            :class="[data.color != null ? 'ification_col' : '']"
            :style="{ 'background-color': data.color }"
          ></i
          >&nbsp;&nbsp;{{ data.orgName }}
        </span> -->
      </el-tree>
    </el-option>
  </el-select>
</template>
<script>
import { getOrgUsersTree } from '@/api/identity'
export default {
  name: 'ElSelectTree',
  props: {
    // 配置项
    props: {
      type: Object,
      default: () => {
        return {
          value: 'orgid',
          children: 'child',
          label: 'orgName'
        }
      }
    },
    organizationsId: {
      type: String,
      default: null
    },
    // 初始值（单选）
    value: {
      type: Object,
      default: () => {
        return {}
      }
    },
    // 初始值（多选）
    valueMultiple: {
      type: Array,
      default: () => {
        return []
      }
    },
    // 可清空选项
    clearable: {
      type: Boolean,
      default: false
    },
    // 自动收起
    accordion: {
      type: Boolean,
      default: false
    },
    // 是否支持多选
    multiple: {
      type: Boolean,
      default: true
    }
  },
  data() {
    return {
      defaultOrgId: null,
      options: [],
      resultValue: [], // 传给父组件的数组对象值
      valueName: [], // 输入框显示值
      openTree: [], // 需要展开的id
      defaultValue: []
    }
  },
  watch: {
    // value() {
    //   this.resultValue = this.valueMultiple; // 初始值
    //   this.initHandle();
    // },
    valueMultiple: {
      handler(newVal, oldVal) {
        console.log(newVal, '---------111111')
        if (newVal.length > 0) {
          const valueNameTemp = []
          this.valueMultiple = newVal
          if (this.valueMultiple) {
            this.valueMultiple.forEach((item) => valueNameTemp.push(item.name))
          }
          this.valueName = valueNameTemp
          this.resultValue = newVal.map((item) => {
            return {
              name: item.name,
              id: item.value
            }
          })
          this.defaultValue = newVal.map((item) => {
            return item.value
          })
        }
      },
      immediate: true
    }
  },
  mounted() {
    this.getSelectTreeList()
    // this.resultValue = this.valueMultiple; // 初始值
    this.initHandle()
  },
  methods: {
    // 获取 部门 tree
    async getSelectTreeList() {
      await getOrgUsersTree().then((res) => {
        this.options = res
      })
    },
    // 初始化显示
    initHandle() {
      this.initScroll()
    },
    // 初始化滚动条
    initScroll() {
      this.$nextTick(() => {
        const scrollWrap = document.querySelectorAll('.el-scrollbar .el-select-dropdown__wrap')[0]
        const scrollBar = document.querySelectorAll('.el-scrollbar .el-scrollbar__bar')
        scrollWrap.style.cssText = 'margin: 0px; max-height: none; overflow: hidden;'
        scrollBar.forEach((ele) => (ele.style.width = 0))
      })
    },
    // 从输入框中直接删除某个值时
    changeValue(val) {
      console.log(val, '-------')
      // 多选（同时删掉传给父组件中多余的值，再传给父组件）
      this.resultValue.map((item, index) => {
        const i = val.indexOf(item.name)
        if (i === -1) {
          this.resultValue.splice(index, 1)
        }
      })
      this.$emit('getValue', this.resultValue)
    },
    // 勾选 /反选
    handleCheckChange(data, checked, indeterminate) {
      this.valueName = []
      if (checked) {
        console.log('选中的数据', data)
        if (data.data.type == 'user') {
          this.resultValue.push({ name: data.name, id: data.id })
        }
      } else {
        console.log('取消选中的数据', data)
        // 取消勾选
        this.resultValue.map((item, index) => {
          if (data.name === item.name) {
            this.resultValue.splice(index, 1)
          }
        })
      }
      console.log(this.resultValue, '-----hahahahaha------')
      this.resultValue.forEach((item) => {
        this.valueName.push(item.name) // 输入框显示值
      })
      this.$emit('getValue', this.resultValue)
    },
    // 默认展开全部
    openTreeList(list) {
      list.forEach((item) => {
        this.openTree.push(item.orgid)
        if (item.children && item.children.length) {
          this.openTreeList(item.children)
        }
      })
    },

    // 清除选中
    clearHandle() {
      console.log('清除选中')
      this.valueName = []
      this.resultValue = []
      this.clearSelected()
      this.$emit('getValue', this.resultValue)
    },
    // // 清空选中样式
    clearSelected() {
      this.$refs.selectTree.setCheckedKeys([])
      // let allNode = document.querySelectorAll('#tree-option .el-tree-node')
      // allNode.forEach((element) => element.classList.remove('is-current'))
    }
  }
}
</script>
<style lang="scss" scoped>
.el-scrollbar .el-scrollbar__view .el-select-dropdown__item {
  height: auto;
  max-height: 300px;
  padding: 0;
  overflow: hidden;
  overflow-y: auto;
}

.el-select-dropdown__item.selected {
  font-weight: normal;
}

ul li >>> .el-tree .el-tree-node__content {
  height: auto;
  padding: 0 20px;
}

.el-tree-node__label {
  font-weight: normal;
}

.el-tree >>> .is-current .el-tree-node__label {
  color: #409eff;
  font-weight: 700;
}

.el-tree >>> .is-current .el-tree-node__children .el-tree-node__label {
  color: #606266;
  font-weight: normal;
}

.el-popper {
  z-index: 9999;
}

.ification_col {
  width: 20px;
  height: 10px;
  display: inline-block;
}

.el-select-dropdown__item::-webkit-scrollbar {
  display: none !important;
}

.el-select {
  ::v-deep.el-tag__close {
    display: none !important; //隐藏在下拉框多选时单个删除的按钮
  }
}
</style>
